61947078 has 8 divisors (see below), whose sum is σ = 123894168. Its totient is φ = 20649024.

The previous prime is 61947059. The next prime is 61947091. The reversal of 61947078 is 87074916.

It is a sphenic number, since it is the product of 3 distinct primes.

61947078 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5162251 + ... + 5162262.

It is an arithmetic number, because the mean of its divisors is an integer number (15486771).

Almost surely, 2^61947078 is an apocalyptic number.

61947078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61947078 is a wasteful number, since it uses less digits than its factorization.

61947078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10324518.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 61947078 is about 7870.6466062198. The cubic root of 61947078 is about 395.6765162557.

The spelling of 61947078 in words is "sixty-one million, nine hundred forty-seven thousand, seventy-eight".